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ioda
3 years ago
15

According to the generally question for conditional probability if P(AnB) = 5/7 and P(B) = 7/8 what is P(A|B)?

Mathematics
1 answer:
never [62]3 years ago
3 0
Hi!

P(A|B) means the probability A will happen given B has happened. P(AnB) is the probability both will happen, and P(B) is the probability B will happen.

You can figure out a formula from that, but here's the generally accepted one:

P(A|B) = P(AnB) / P(B)

P(AnB) = 5/7
P(B) = 7/8

Substitute values in:

P(A|B) = 5/7 / 7/8

P(A|B) = 5/7 * 8/7

P(A|B) = 40/49
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I’m confused on this one
Mekhanik [1.2K]

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x = 11


The measure of x is 11°.

6 0
3 years ago
Help me please I don’t wanna fair math
vladimir1956 [14]

Step-by-step explanation:

To find the equation you must first find the gradient and also look for the points on the graph.

I see point ( 0, 2) and point (4, 1)

Hence first find the gradient before equation

the gradient = y2-y1/x2-x1

y2 = 1

y1 = 2

x2 = 4

X1 =0

if you put in the values it will look like

1-2/4-0

-1/4

the gradient = -1/4

So for the equation the formula is

remember m is the gradient

y - y1 = m ( x - x1 )

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I will go with (4, 1)

y - y1 = m ( x - x1 )

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y -1 = -1/4 ( x - 4)

4 ( y-1) = -1(x-4)

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6 0
3 years ago
A diver ascended 8/9 of a meter in 1/9 of a minute. What was the diver's rate of ascent in meters per minute?
Akimi4 [234]

Answer:

8m/mins

Step-by-step explanation:

The following were obtained from the question:

Distance = 8/9m

Time = 1/9min

Rate = Distance /time

Rate = (8/9) / (1/9) = 8/9 x 9

Rate = 8m/mins

3 0
3 years ago
Find the area of the regular 18 gon with a radius of 13mm
pochemuha
This polygon thing is all about triangles. If the polygon has 18 sides, it also has 18 central angles.  360/18  = 20.  This means that each one of the triangles has a vertex angle of 20.  We need to take this one triangle now and "pull" it out and isolate it cuz we only need to worry about 1, and we need to find the base measure of it for the perimeter, and the altitude of it for the apothem.  It would be easiest then to separate this triangle in half and have it be a right triangle, and the vertex angle is now 10.  If the vertex angle is 10 and this is a right triangle, then the 3rd angle by the triangle angle-sum theorem has to be 80.  The side ACROSS from the 80 degree angle is the apothem and the info telling us that the radius is 13 now puts that 13 as the hypotenuse of our right triangle.  We will use a trig identity relating this reference angle of 80 to the side across from it, "a", and the hypotenuse of 13.  sin(80)= \frac{x}{13} and we get that that side measures 12.8, rounded.  Now we have the apothem for the formula.  Now we need the base measure of the right triangle.  Use cos of 80 to find it: cos(80)= \frac{x}{13} ad we get the base measure of the right triangle is 2.25.  But don't forget that this is only half the original triangle we pulled out, so the base of the "whole" triangle is 2.25 * 2 which is 4.5.  If one side measures 4.5 and we have 18 of them, the perimeter for our formula is 81.  Now let's put everything together in the formula to find the area for the polygon: A= \frac{1}{2} (12.8)(81) and we find that the area is 518.4
8 0
3 years ago
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liq [111]
Your post (" <span>f(x) = 2/3(6)x ") would be clearer and less ambiguous if you'd please format it as follows:

</span><span>f(x) = (2/3)(6)^x.  The (2/3) shows that 2/3 is the coefficient of the exponential function 6^x.  Please use " ^ " to indicate exponentiation.

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If you complete this graphing assignment, then all you'd have to do is to flip the whole graph over vertically, reflecting it in the x-axis.  You'll see that the graph never touchs the x-axis.  Therefore, the range of this flipped graph is (-infinity, 0).</span>
7 0
3 years ago
Read 2 more answers
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